Correlation of ANB, Beta and Yen angle with soft tissue profile angle in class I and class II patients: A retrospective cephalometric study.

Abstract

In orthodontics, various methods of assessing sagittal jaw base relationship areformulated.Earlier, skeletal pattern was analysed only clinically, with the introduction of Cephalometrics by Broadbent and Hofrath in 1931, ANB angle and Beta angle are being used to describe skeletal discrepancies between the maxilla and mandible. YEN angle is also used as a sagittal dysplasia indicator after its introduction in 2009. The aim of our study was tocorrelate ANB, Beta and Yen angle with soft tissue profile angle in class I and class II patientsTotal of 140 lateral cephalograms of class I and class II patients were selected based on soft tissue profile angle. In each cephalogram, ANB, Beta and YEN angle were measured and compared with soft tissue profile angle. Statistical analysis carried out. Our study concluded that soft tissue drape in both Class I and class II individuals are not significantly correlated with skeletal alignment of maxilla and mandible.